/*******************************************************************************
 *     ___                  _   ____  ____
 *    / _ \ _   _  ___  ___| |_|  _ \| __ )
 *   | | | | | | |/ _ \/ __| __| | | |  _ \
 *   | |_| | |_| |  __/\__ \ |_| |_| | |_) |
 *    \__\_\\__,_|\___||___/\__|____/|____/
 *
 *  Copyright (c) 2014-2019 Appsicle
 *  Copyright (c) 2019-2020 QuestDB
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *  http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *
 ******************************************************************************/

package io.questdb.griffin.model;

import io.questdb.std.IntList;
import io.questdb.std.ObjList;
import io.questdb.std.ObjectFactory;

public final class AnalyticColumn extends QueryColumn {
    public final static ObjectFactory<AnalyticColumn> FACTORY = AnalyticColumn::new;
    private final ObjList<ExpressionNode> partitionBy = new ObjList<>(2);
    private final ObjList<ExpressionNode> orderBy = new ObjList<>(2);
    private final IntList orderByDirection = new IntList(2);

    private AnalyticColumn() {
    }

    public void addOrderBy(ExpressionNode node, int direction) {
        orderBy.add(node);
        orderByDirection.add(direction);
    }

    @Override
    public void clear() {
        super.clear();
        partitionBy.clear();
        orderBy.clear();
        orderByDirection.clear();
    }

    public ObjList<ExpressionNode> getPartitionBy() {
        return partitionBy;
    }

    public ObjList<ExpressionNode> getOrderBy() {
        return orderBy;
    }

    public IntList getOrderByDirection() {
        return orderByDirection;
    }

    @Override
    public AnalyticColumn of(CharSequence alias, ExpressionNode ast) {
        return (AnalyticColumn) super.of(alias, ast);
    }
}
